反应详情

4-{3-Hydroxy-1-[(methylamino)methyl]propyl}benzonitrile (0.55 g, 2.69 mmol) and DIPEA (0.77 g, 5.9 mmol) were dissolved in CH2Cl2 (5 mL). 3-Cyano-1-naphthoyl chloride (sse Method 11; 0.58 g, 2.69 mmol) was added in portions with stirring and cooling (external ice-bath). The mixture was stirred for 2 h with cooling and then diluted with CH2Cl2 (10 mL). The solution was washed twice with water, twice with a saturated aqueous KHSO4 solution and then with brine. The solvent was removed by evaporation and the residue flash chromatographed on silica gel (CH2Cl2-MeOH, 9:1). There was obtained 0.70 g (67%) of 3-cyano-N-[2-(4-cyanophenyl)-4-hydroxybutyl]-N-methyl-1-naphthamide as a white solid. 1H NMR (400 MHz, CDCl3): 1.4-2.5 (cm, 2H), 2.6 (s, 3H), 3.1-4.6 (cm, 6H), 6.4-7.8 (cm, 8H), 7.9 (d, 1H), 8.2 (s, 1H); LCMS: m/z 384 (M+1)+.

1. temperaturecooling (external ice-bath)
2. stirringThe mixture was stirred for 2 h
3. temperaturewith cooling
4. washThe solution was washed twice with water, twice with a saturated aqueous KHSO4 solution
5. customThe solvent was removed by evaporation
6. customthe residue flash chromatographed on silica gel (CH2Cl2-MeOH, 9:1)